Air conditioner



FIG. 1 is a front perspective view of an air conditioner according to the present invention;

FIG. 2 is a side view of the air conditioner of FIG. 1;

FIG. 3 is a side view of the air conditioner of FIG. 2 rotated 180 degrees;

FIG. 4 is a side view of the air conditioner of FIG. 2 rotated 90 degrees;

FIG. 5 is a side view of the air conditioner of FIG. 4 rotated 180 degrees;

FIG. 6 is a top view of the air conditioner; and,

FIG. 7 is a bottom view of the air conditioner. 

The ornamental design for an air conditioner, as shown and described. 